## anonymous 5 years ago It was, what is the derivative of cos^2(x)^3?

1. anonymous

so its like cos ^ 6 x ? thats 6 cos x ^ 5 (-sin x)

2. anonymous

do you mean $\cos^2(x^3)$ ???

3. anonymous

$= -6x^2 \cos(x^3)\sin(x^3)$